Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows provided by operating activities:
Net income	$ 69.1	$ 12.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	28.4	25.2
Amortization of inventory step-up adjustment to fair value		5.1
Amortization of debt issuance costs, original issue discount, and soft call premium	1.1	1.2
Stock-based compensation	8.5	27.8
Provision for excess and obsolete inventory	6.2	5.1
Provision for doubtful accounts	0.2	(0.4)
Deferred income taxes	0.6	(2.4)
Asset impairments	1.2
Other	(0.1)
Changes in operating assets and liabilities, net of business acquired:
Trade accounts receivable	(42.5)	4.0
Inventories	(20.3)	(10.3)
Income taxes	1.0	(3.7)
Other assets	10.1	4.8
Accrued compensation	(19.3)	(22.9)
Other liabilities	8.0	0.4
Accounts payable	22.7	(17.3)
Net cash provided by operating activities	74.9	29.1
Cash flows provided by (used in) investing activities:
Acquisition of business, net of cash acquired		(988.6)
Purchases of investments	(30.2)	(44.2)
Maturities of investments	49.5	18.6
Sales of investments	28.7	154.5
Proceeds from sale of assets		0.1
Purchases of property, plant and equipment	(10.0)	(14.5)
Net cash provided by (used in) investing activities	38.0	(874.1)
Cash flows (used in) provided by financing activities:
Net proceeds from borrowings	12.1	638.6
Payments on borrowings	(62.2)	(0.2)
Net payments related to employee stock awards	(20.4)	(9.0)
Dividend payments	(11.0)	(10.8)
Net cash (used in) provided by financing activities	(81.5)	618.6
Effect of exchange rate changes on cash and cash equivalents	(4.0)	0.1
Increase (decrease) in cash and cash equivalents	27.4	(226.3)
Cash and cash equivalents at beginning of period	414.6	644.3
Cash and cash equivalents at end of period	$ 442.0	$ 418.0